XML 36 R1.htm IDEA: XBRL DOCUMENT v3.20.2
Document and Entity Information - shares
3 Months Ended
Jul. 31, 2020
Sep. 04, 2020
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jul. 31, 2020  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q1  
Entity Registrant Name KEWAUNEE SCIENTIFIC CORP /DE/  
Entity Central Index Key 0000055529  
Current Fiscal Year End Date --04-30  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   2,750,143